The DA 645 25mm F4 lens is a fast, wide angle lens designed specifically for use with the PENTAX 645D. It features an advanced optical design tailored for digital photography, quiet SDM autofocus, and it's fully weather sealed for field use.
High performance wide angle 645 lens.
Weather and dust sealed construction for safe and reliable operation in the field.
PENTAX Quick Shift focus system disengages AF motor for instant auto to manual focus switching.
Aero Bright coating minimizes aberrations while maximizing light transmission.
Focal length equivalent to 19.5mm (in 35mm format) when used with PENTAX 645D body (95 degree angle of view).
Inline filter tray for 40.5mm filter (lens curvature prevents front mounted filters).
PENTAX SDM autofocus system for accurate, quiet autofocus performance.
Rounded aperture blades for beautiful bokeh at open apertures.
PENTAX SP coating protects the lens from dust and oils making it easier to clean.
Developed specifically for the PENTAX 645 digital system.
Lens | PENTAX 645AF2 Bayonet |
Angle Of View | 95° on PENTAX 645D body |
Number Of Diaphragm Blades | 9 |
Minimum Focusing Distance | 1.31’ (0.4m) |
Maximum Magnification | 0.11X |
Weight | 36.7 oz (1040g) |
Objective Cap | Lens Cap for DA 645 25mm |
Lens Aperture Ring | n/a |
Diaphragm Control | Fully Automatic |
Notes | Quick-Shift Focus, Aero Bright Coating, SP (Super Protect) Coating, rounded aperture blades (F4-F8), Dustproof and Water Resistant, SDM focus only. |
Lens Construction | 12 elements, 8 groups |
Aperture | F4 |
Minimum Aperture | F32 |
Filter Diameter | 40.5mm (inline filter, not front mount) |
Dimensions | 3.5x5.8” (90x148.5mm) |
Case | Lens Soft Case S100-200 |
Hood | Built-in |
Tripod Adapter | n/a |
Focal Length | 25mm (equiv 19.5mm in 35mm format when mounted to 645D) |
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